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Finding the Fourth Proportional to 583.68, 878.82 and 440.64

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Solution

The fourth proportional to 583.68, 878.82 and 440.64 is: 663.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.68 : 878.82 = 440.64 : x
  2. Step 2: Convert to fraction form
    583.68/878.82 = 440.64/x
  3. Step 3: Cross multiply
    583.68x = 878.82 × 440.64
  4. Step 4: Simplify right side
    583.68x = 387,243.24
  5. Step 5: Solve for x
    x = 387,243.24/583.68
  6. Step 6: Final answer
    x = 663.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.